Title :
An analysis of harmonics from dimmable LED lamps
Author :
Uddin, Sohel ; Shareef, Hussain ; Mohamed, Azah ; Hannan, M.A.
Abstract :
The purpose of this paper is to investigate harmonic generation from dimmable Light Emitting Diode lamps (LEDs) which are used in residential and commercial applications as an energy efficient lighting systems. It is done by conducting laboratory tests on various LED lamps and tapping the load current behavior under different conditions. Then the frequency domain analysis is performed to investigate the generated harmonics. Harmonic levels of different wattage, various branded dimmable LED bulbs are experimentally evaluated and compared. Experimental result shows that, all LED lamps generate very high levels of harmonics during dimming operation which may affect the power quality of AC mains.
Keywords :
LED lamps; harmonic analysis; lighting; power supply quality; AC power quality; branded dimmable LED bulbs; dimmable LED lamps; dimmable light emitting diode lamps; dimming operation; energy efficient lighting systems; frequency domain analysis; harmonic levels; harmonics analysis; Electronic ballasts; Harmonic analysis; LED lamps; Power harmonic filters; Dimmable Function; Light Emitting Diodes (LEDs); Power Quality; Total Harmonic Distortion (THD);
Conference_Titel :
Power Engineering and Optimization Conference (PEDCO) Melaka, Malaysia, 2012 Ieee International
Conference_Location :
Melaka
Print_ISBN :
978-1-4673-0660-7
DOI :
10.1109/PEOCO.2012.6230857
